Strains are emerging between the two long-standing friends (Image: Getty Images)

To try to save face Labour will table an amendment so MPs have the opportunity to vote for its “progressive tax proposal” to make the top five per cent of earners pay more. To be fair to the leadership, its position is in line with its 2017 manifesto commitments.

This being Labour the whole debate has been clouded by claims that it is being used by Corbyn’s opponents within the party to embarrass him.

Accusations have been flying around that it is a Brownite or Blairite plot (delete according to your preferred bogeyman).

This got short shrift from Lucy Powell MP yesterday who said the name calling was an attempt to deflect attention from a legitimate debate.

She said there people across the party who were struggling to vote for a £860 a year tax cut for high earners.

The row has also shone a light on the tensions between Corbyn and McDonnell.

They can lay claim to one of the longest friendships in politics which was cemented through years of adversity.

It is now being tested by the challenges which come with the responsibility of leadership.

After the Budget interlude attention is once again returning to Brexit.

Dominic Raab checks if it's time for another u-turn (Image: AFP/Getty Images)

The shambles overshadowed a genuine breakthrough in the talks with reports Theresa May is close to striking a deal that would give UK financial service companies continued access to the EU after Brexit.

Today's agenda:

9.30am - Digital, Culture, Media and Sport questions in the Commons.

10.00am - Paul Johnson of the IFS and Rain Newton-Smith of the CBI give evidence to the Treasury select committee on the Budget.